Process of rolling metal bars.



No. 674,652. Patented May 2|, mm. P. a n. MERGLER. PROCESS OF ROLLING METAL BARS.

' (Application filed Nov. 24, 1900.) (No Model.)

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reference being had therein to the accompa- UNITED STATES PATENT OFFICE.

PETER MERGLER AND RUDOLPH MERGLER, OF PITTSBURG, PENNSYLVANIA.

PROCESS OF ROLL ING METAL BARS.

SPECIFICATION forming part of Letters Patent N 0. 674,652, dated May 21, 1901. Application filed November 24, 1900, Serial No. 37,614:- (No specimens.)

To all whom it may concern.-

Be it known that we, PETER MERGLER and RUDOLPH MERGLER, citizens of the United States of America, residing at Pittsburg, in the county of Allegheny and State of Pennsylvania, have invented certain new and useful Improvements in Processes of Rolling Metal Bars, of which the following is a specification,

nying drawings.

This invention relates to certain new and useful improvements in a process of rolling metal bars, and has for one object the provision of novel means whereby three bars are rolled at the same time from one solid ingot, bloom, or billet.

The invention has for its further obj eot theconstruction-of a continuous mill wherein the ingot is first crushed or broken down and then rolled through different passes of the mill, acquiring certain novel forms and shapes until the last pass is reached, which finishes the ingot, bloom, or billet into three square or flat bars, as desired.

Another object of the invention is to con-' struct a mill wherein the method of forming three separate and distinct bars from a single billet, bloom, or ingot will be a comparatively easy one.

With the above and other objects in view the invention consists in the novel combination and arrangement of parts to be hereinafter more fully described, and specifically pointed out in the claim.

In describing the invention in detail refererence is had to the accompanying drawings, forming a part of this specification,and wherein like numerals of reference indicate corresponding parts throughout the several views, in which Figure l is a plan view of our improved rolling-mill wherein our new process is employed. Fig. 2 is a form of the billet, bloom, or ingot. Fig. 3 is a like view of the same reduced. Fig. 4 is a similar view of the same as it appears when rolled through the third set of rolls. Fig. 5 is a like view as it appears when rolled through the fourth set of rolls. Fig. 6 is a similar view as it appears when rolled through the fifth set of rolls. Fig. 7 isa like view of the billet as it appears when rolled through the sixth set of rolls. Fig. 8 is a view of the finished article as it appears when rolled through the seventh or last set of rolls.

In the drawings the reference-numeral 1in-' dicates the first set of rolls, and 2 the second set of rolls. These rolls are of the ordinary reduced rolls and shapes the billet as shown in Figs. 2 and 3, respectively, of the drawings. The reference-numeral 3 indicates the third set of rolls, producing the shape of the billet as shown in Fig. 4. The referencenumeral 4. indicates the fourth set of rolls and forms the billet into the shape as shown in Fig. 5 of the drawings. 5 indicates the fifth set of rolls, which form the billet into the shape as illustrated in Fig. 6. The reference-numeral 6 indicates the sixth set of of rolls and shapes the article in the shape as shown in Fig. 7. The reference-numeral 7 indicates the set of finishing-rolls, producing the finished article as shown in Fig. 8. 8 represents the driving-shafts of the various rolls, and 9 the beveled gears. The latter are reduced in size, so as to drive the various rolls with more rapidityin proportion to the reduction of the ingot through the various passes or rolls. It will be seen that this operation is a continuous one and that the operation of the parts is an extremely simple one.

It will be noted that various changes may be made in the details of construction without departing from the general spirit of our invention.

Having thus fully described our invention, what wev claim as new, and desire to secure by Letters Patent, is

The process of reducing solid ingots to three distinct bars consisting in first compressing the ingot to an oblong form, second in further reducing the bar and convexing its upper surface and concaving its lower surface; third, in further reducing the bar and forming a longitudinal top rib and two lower ribs with a neck therebetween; fourth, in further red ucing the necks connecting the several ribs; fifth, in reducing the bar into three equal sections connected by necks'and lastly in dividing the bar into three equal bars, substantially as described.

In testimony whereof we affix our signatures in the presence of two witnesses.

PETER MERGLER. RUDOLPH MERGLER.

Witnesses:

JOHN NOLAND, E. E. POTTER. 

